In the 3D system emphasis was placed on the customer interaction, embracing all elements required for effective e-commerce. The client module offers the advantage of producing products (tourism packages) tailored made to customers' specifications and in real time by providing an interactive network for instant exchange of information. The innovation of this system is the fact, that most contemporary tourism sites are either build for marketing reasons (presenting the tourism products), or at most, are engaged in the business of e-commerce by providing ready-made and relatively fixed products.
In the case of the 3D system the customer decides when he/she wants to travel, how wants to travel, which places and particular locations wants to visit, what excursions is he/she interested in, where to stay, what accommodation facilities wants to enjoy and even more personal preferences such as medical services and so on. The actual mean for the customer to interact with the system is the 3D client module. The web site therefore, is the far most important part of the model for the customer's point of view.
With this factor in mind, the 3D system was developed to provide a friendly site that incorporates all necessary elements of User Requirements. This is obvious from the 'User Requirements Document'' and the 'Zero Code Interface'' developed early in project through an extensive research focused on professional opinions and practices. Evidently, the site is indeed user friendly, and the customer can input all the necessary information to design his/her "vacation package". The customer may input general information-requests regarding his/hers preferences on the location, time period, accommodation, health services, cultural events and flight services, that define the basic "modules" of a tourism product. Keep in mind, that the "modules" or options are the result of an extensive and excusive research and analysis of user requirements and not the result of guessing or theorising. Thus, it is recommended the reader, to recur the information provided in the User Requirements Document and the Zero Code Interface for a better understanding how and why the development team used those options for building up the 3D website.